If you lived in a hot city all your life, your natural skin tone is whiter/paler

[Deleted member 15827]

Temperature regulates melanin synthesis in melanocytes - PubMed

Temperature change is one of the major environmental factors that influence the human skin. However, the relationship between temperature and melanogenesis has received little attention. In the present study, we investigated the effects of temperature change on melanogenesis in a mouse...

pubmed.ncbi.nlm.nih.gov

Explains why brahmins in the south are on average browner than brahmins in the north. BTW light brown mogs pale white in every part of the world